The pre-drilled holes for the knurled hose fittings don't match the actual foot strip holes, so I needed to use the Dremel to widen them considerably.
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Now the foot strip holes can accommodate the knurled hose fittings when mounted to the foot shell, as seen from the inside.
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Next up, cutting the holes at the top of the foot shells to allow for the motor wiring to pass through. I used a combination of the Dremel and a hacksaw blade.
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The holes for mounting the battery boxes still needed to be drilled. I used the boxes to mark where to drill the holes.
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I'm planning on using 1/8" drywall screws to mount the battery boxes to the foot shells. How do I plan to do that? By gluing pieces of PVC on the backside of the holes I'm drilling, for the drywall screws to screw into.
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The holes line up, so the battery boxes should be ready for mounting when the time comes.
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And finally (for the foot shells), time to start priming the foot shells and doors. I use gray primer when white paint will go on top, to more easily distinguish primer from paint.
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Hmm. This wasn't in the plans.
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I had run low on regular primer and switched to a filling primer for the second coat, and perhaps the different mixture was the culprit, I'm not sure. At any rate, I sanded that down and will try again tomorrow.
I wrapped up by cutting the ends off the gas pipe that is used for the manual droid lift on droid #2.
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Now the pipes fit into the center leg without bumping into the main gas pipe above them. I also adjusted the manual droid lift so that the gas pipes are level and no longer crooked when screwed into place.